On a hires screen I find it really hard to see on which image the cursor currently is, because the rectangle around the image is very thin. Is it possible to increase the line width of that rectangle?

Already I looked through customization options, through image-dired.el, and using what-cursor-position I inspected what’s at on cursor position, all to no avail.

Screenshot showing example

2 Answers 2


You might try customizing one or both of these image-dired options (the text is what you get with C-h v).

  • image-dired-thumb-relief - Size of button-like border around thumbnails.
  • image-dired-thumb-margin - Size of the margin around thumbnails. This is where you see the cursor.

There are many other image-dired options, some of which might also help you more easily see which choice is currently selected. Use M-x customize-group RET image-dired RET to see them all.

  • 1
    As I wrote, “already I looked through customization options”. The two options you mentioned don’t change the line thickness of the rectangle indicating the current cursor position.
    – feklee
    Commented Sep 17, 2019 at 8:02
  • 1
    Sorry I don't know how you might fatten the box's line width. But does either of them reduce your problem: "I find it really hard to see on which image the cursor currently is"? If you don't find a good answer for fattening the line width, does either of these options at least help you see which image is selected?
    – Drew
    Commented Sep 17, 2019 at 14:59
  • The line is just very thin, hard to see. The options I knew before, and they are already customized as can be seen in the screenshot I posted as part of my question.
    – feklee
    Commented Sep 18, 2019 at 10:09
  • The question is how the box is generated. Once that is known, the line thickness can hopefully be adapted.
    – feklee
    Commented Sep 18, 2019 at 10:09

I agree with @feklee that this is a major problem for those who use Image-Dired. Finding the selected icon is like looking for a needle in a haystack. The solution provided by @Drew helps. My pragmatic solution is to hit RET and then DEL as I look for the thumbnail. The movement allows my eyes to find the right image.

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